Some more links that can assist you:
This is one that's explaining EXACTLY what I was trying to show you. http://h30507.www3.hp.com/t5/Technical-Support-Services-Blog/DPTIPS-Large-Objects-Divide-and-Conquer-with-Data-Protector/ba-p/92033
Why more than one VTL? http://h30507.www3.hp.com/t5/Technical-Support-Services-Blog/DPTIPS-StoreOnce-Back-to-Basics-Why-More-Than-One-VTL/ba-p/147847